Wrench



Patented Nov. 8, 1927.

UNIT'Eo STATES l JAMES.MenoiiianDy'or- Los ANGELES, fc'ALrFo'R'NrA. f i

. WRENCH.

l Application filed June a.

My invention is a wrench of a slidingfjaw type in which a screwengaging the rack is utilized to adjust lthe j awsotfthe wrench. Ainobject of my invention is the construcf, tion o tafhand wrench ot'a sliding' jaw type in. which ya ravck andfaJ rotating screw yare utilizedto adjust the jaws, the screw Vbeing sh-i'iftable to be-disenga'geable from the rack to allo \'v quick adjustment. Another feature of my invention is `the mounting "of the .jawsl relatively toeach other that vthey mayY liaveja slight [rocking motionbylproviding a' yoke on one ot the jaws encircling the bar supporting the other;l jaw, thisy yoke allowing a slightrocking movement. --Another feature of my invention is iny theV grippingy jaws having onel of the jaws slight-` ly movable towards and from the other, this' jaw sliding on the yoke.' A i My invention will be more readily understood tromthe following descriptionV andV drawings,.-in which; Figure 1 is a part longitudinal section and part elevation oi my wrench; F ig. 2 is a frontedgeV viewjasgi'f taken in the direction oifthearrowj 2 of Figsl l; Fig. 3 is a side elevation ofthe wrench; 13"'1g`:V Alis aQ-transverSe vsection ot the line t-t of Fig. l;

Fig. 5 is a transverse section on the line 55 of Fig. 1. f

In the wrench I employ a handle 1 to which is connected a bar 2, the handle and bar may be considered as relatively stationary. Longitudinal shoulders 3 are formed on each side of the bar and inset from such recesses are rack teeth 4. The outer end 5 of the fixed bar is slightly bevelled, theslope being inwardly towards the rack side of the bar. The deep socket 6 extends longitudinally of the bar andl a plug V7 fits therein, this plug being attached to a shittable jaw 8 by means of a screw threaded connection 9 or the equivalent. A spring 1,0 connected to the plug and to the base ot the lsocket by a pin or the like 11 normally draws the shittable jaw in close contact with the end face of the bar.

A sliding bar 12 has a jaw 13 on its outer end vand is provided with a yoke ll-at its inner end, this yoke encircling the bar 2. Slideways 15 and 16 are formed in the slidable bar and carry slidable blocks 17 in which are journaled the bearing ends 18. ot the screw 19. Springs 2O itted in the reseparates the shiftable jaw-8 slightly 'from 192e. sei-iai No. k114,6'77.

cesses 2 1 normally ,onitlienfbloicjks' thrusting the screw into 'engagement' Swithv the .rack teeth.

1 i iets@ yoke es ,eaaieis'jfiit i2 an the o uter endet' the bar2, therebeingh ets 23 ysecured to the-barf2 `"o1i 'eac thereof preventing said yoke' fr'ins'li'p downwardly on the bar `tow'a'rds"thek rlhis yok'e ha s an `inclined bevelle'd 24 of substantially the saines'lbp outer-y end 5 Vof the bar 2. The jaw sui'iicienty width .to rest oii the surta e ot theyoke and arms 25".,e'ritendiig eachside 'of thebar '12, retaijing'tles' able jaw in 'peper remonta; bari the bar 12'. A spring 26 fitted iiif'a'rc transversely, of the,4 b a'r i2 at ft'liegouter IendL normally l'c lraws these"Y bars ,t'v'vards'e'afclfit otheratthe outerport'ion`,

i pair t pins 28 'f re securedt'otliey site sides ofthe yoke lt'fandexteiidintoft e" ede? p es n wur .te *manina vi1; jaws t' shifted relative 'tot'ea'chother l'rot a'ti'nglthe screwv 19 in engagement with the rack 4, however, when a quick adjustment is desired it is merely necessary to withdraw the screw from engagement with the rack vby compressing the spring 20 and thereby shift the bars 2 and 12 relative to each other, thereby forming a quick adjustment of the jaws.

In regard to the feature ot my wrench giving av tight grip on the nut or other article engaged between the jaws, such as a pipe, it will be seen that thev bars 2 and 12 may have a slight rocking movement and in such action compress the spring 26. Vhen the bars 2 and 12 are rocked away from yeach otherl the aw 8 is carried away from the bar 12 and in such action through the medium of the plug 7-is slid upwardly on `the incline 24 of the yoke 22. Such action therefore lill the end face of the bar 2. ThisV action is shown by the dottedv lines in Fig. 1, thereby forcing the two jaws 8 and 13 slightly closer to each other by this rocking movement of the jaws. On the jaws resuming their position as shown in Fig. 1, which motion is caused by the spring `26, the spring 10 withrating the two jaws 8 and 13 irrespective draws the jaw 8 until it contacts with the outer end of' the jaw 2, thereby slightly sepaof any adjustment bythe screw .19. j

It will thus be seen that with my wrench I have provided for a quick adjustment `for regulating the jaws and also for an autovmatic adjustment of one jaw relative to the other in the action of gripping and turning anarticle such as a nut," pipe or the like.

` It" will be manifest 'that these features may be considerably `changed in general construction and in Aspecific details to suit different types of wrench. Such changes however, will be within the spirit of inventionjas set forth inthe description, drawings and claims.`

Having described my invention,` what I claim isz, 1 Y

` l. A wrench comprising in combination la handle having a bar connected thereto with a Vshiftablejaw `on the end of the bar, a slid-g able barjhaving a rigid jaw, means to slidev said barrelativeto the bar attached to the handle', a yoke encirclingbothl bars Vand al-A lowing slight rocking kmovement,V the" shift- `able jaw and 'the yokehaving inclined sur- A faces whereby saidfjaw'normallyin engagement with the j yoke, the yoke and thejaw having inclined surfacesyand a'spring tensioned to normally 40' `force said bars towardseach other adjacent their outer ends y 3. A `wrenchcomprisinguin.combination a Y j pair Vofrelatively slidable bars havingjaws mounted on their outer ends, one of said bars-having apair of longitudinal shoulders and a rack, the other bar havinga yoke fixed thereto and engaging around `thefother bar,

slideways in oneo`f-tl1e bars, blocks forming l5() journals, Aand springsy bearing Y journals slidable therein,2 ascrew mounted in said against said blocks-normallytpressing the screw` into engagement f with the rack,` and pins n the yoke engaging the shoulders.

4; A wrench ,as claimed in Aclaim `3, a yoke loosely surrounding the saidbarsadjacent:

`the outer end of oneofthe bars, a loosely mounted y jaw bearing on "said hyoke, fandf means vto retain the said 4jaw in engagementt with the"` yoke, theyoke andthejaw having` inclinedmeetingsurfaces. l l i `5; `Awrench comprising in combination ar j pair of relatively slidable bars, a rigid jaw on one anda looselymounted `jaw on the other,` a -yoke encircling said bars,` `the loose.l

jaw engagingthe yoke, said-yoke havingan inclined surfaceto slidethe `loose jaw on the i relative umovement of said bars, the loose jaw being mounted on one of `the b`ars,said bar having a deep `sockenaypluglsecuredl to the j aw, and a spring in the socket securedto theplug.

' In testimony i whereof` I'ihave nameto this specification. i

.miras Menonkiin." 

